The chemical reactions and pathways involving the nonmetallic element sulfur or compounds that contain sulfur, such as the amino acids methionine and cysteine or the tripeptide glutathione.

A series of processes that forms an integrated mechanism by which a cell or an organism detects the depletion of primary sulfur sources and then activates genes to scavenge the last traces of the primary sulfur source and to transport and metabolize alternate sulfur sources. The utilization process begins when the cell or organism detects sulfur levels, includes the activation of genes whose products detect, transport or metabolize sulfur-containing compounds, and ends when the sulfur is incorporated into the cell or organism's metabolism.

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of deprivation of sulfur.

The chemical reactions and pathways resulting in the breakdown of D-cysteine, (S)-2-amino-3-mercaptopropanoic acid, which occurs naturally in firefly luciferin.

The chemical reactions and pathways involving D-amino acids, the D-enantiomers of amino acids.

The chemical reactions and pathways resulting in the breakdown of amino acids containing sulfur, comprising cysteine, methionine and selenocysteine.

The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.